mirror of https://github.com/libAthena/athena.git
63 lines
1.9 KiB
C++
63 lines
1.9 KiB
C++
#include "athena/WiiImage.hpp"
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#include "athena/Utility.hpp"
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#include <cstring>
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#include <cstdlib>
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namespace athena {
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WiiImage::WiiImage(atUint32 width, atUint32 height, std::unique_ptr<atUint8[]>&& data)
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: m_width(width), m_height(height), m_data(std::move(data)) {}
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atUint8* WiiImage::data() { return m_data.get(); }
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atUint32 WiiImage::width() const { return m_width; }
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atUint32 WiiImage::height() const { return m_height; }
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atUint8* WiiImage::toRGBA() {
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atUint32 x, y;
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atUint32 x1, y1;
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atUint32 iv;
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atUint8* bitmapdata = NULL;
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bitmapdata = new atUint8[m_width * m_height * 4];
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if (bitmapdata == NULL)
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return NULL;
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for (iv = 0, y1 = 0; y1 < m_height; y1 += 4) {
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for (x1 = 0; x1 < m_width; x1 += 4) {
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for (y = y1; y < (y1 + 4); y++) {
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for (x = x1; x < (x1 + 4); x++) {
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atUint16 oldpixel = *(atUint16*)(m_data.get() + ((iv++) * 2));
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// if((x >= m_width) || (y >= m_height))
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// continue;
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oldpixel = utility::swapU16(oldpixel);
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if (oldpixel & (1 << 15)) {
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// RGB5
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atUint8 b = (((oldpixel >> 10) & 0x1F) * 255) / 31;
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atUint8 g = (((oldpixel >> 5) & 0x1F) * 255) / 31;
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atUint8 r = (((oldpixel >> 0) & 0x1F) * 255) / 31;
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atUint8 a = 255;
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atUint8 rgba = (r << 0) | (g << 8) | (b << 16) | (a << 24);
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(*(atUint32**)&bitmapdata)[x + (y * m_width)] = rgba;
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} else {
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// RGB4A3
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atUint8 a = (((oldpixel >> 12) & 0x7) * 255) / 7;
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atUint8 b = (((oldpixel >> 8) & 0xF) * 255) / 15;
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atUint8 g = (((oldpixel >> 4) & 0xF) * 255) / 15;
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atUint8 r = (((oldpixel >> 0) & 0xF) * 255) / 15;
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atUint32 rgba = (r << 0) | (g << 8) | (b << 16) | (a << 24);
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(*(atUint32**)&bitmapdata)[x + (y * m_width)] = rgba;
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}
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}
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}
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}
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}
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return bitmapdata;
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}
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} // namespace athena
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